Self-organized silver nanoparticles for three-dimensional plasmonic crystals.
Metal nanostructures that support surface plasmons are compelling as plasmonic circuit elements and as the building blocks for metamaterials. We demonstrate here the spontaneous self-assembly of shaped silver nanoparticles into three-dimensional plasmonic crystals that display a frequency-selective response in the visible wavelengths. Extensive long-range order mediated by exceptional colloid monodispersity gives rise to optical passbands that can be tuned by particle volume fraction. These metallic supercrystals present a new paradigm for the fabrication of plasmonic materials, delivering a functional, tunable, completely bottom-up optical element that can be constructed on a massively parallel scale without lithography.
Tao
Andrea R
AR
Department of Chemistry, UC Berkeley, Berkeley, California 94720, USA.
Ceperley
Daniel P
DP
Sinsermsuksakul
Prasert
P
Neureuther
Andrew R
AR
Yang
Peidong
P
D003102:Colloids; D003460:Crystallization; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D008855:Microscopy, Electron, Scanning; D012834:Silver / Q000737:chemistry*; D013057:Spectrum Analysis; D020349:Surface Plasmon Resonance
D003102:Colloids; D012834:Silver